You need to buy Live for Speed S2, then you can upload your skins to LFS World.

Do you have S2 license? Because under your nick there's "Demo racer". Do you know that you can log in here with your LFS username?

If you're a demo racer it's not possible to have own skins. But you said "S2 full", I hope you are not using a crack...

As a demo racer you can still use custom skins. The problem for the demo folk is that the skin auto-download from LFSW doesn't work. The simple (and only, I think) solution is to upload your skin to an image hosting site such as Imageshack.us and give the link to those people who you'd prefer to see your skin. The other people would then download your skin and put it in the appropriate folder, hence being able to view your skin.

Of course, it's all much easier once you are licensed and can exploit the LFSW skins feature to the fullest.

Quote from NotAnIllusion :

As a demo racer you can still use custom skins. The problem for the demo folk is that the skin auto-download from LFSW doesn't work. The simple (and only, I think) solution is to upload your skin to an image hosting site such as Imageshack.us and give the link to those people who you'd prefer to see your skin. The other people would then download your skin and put it in the appropriate folder, hence being able to view your skin.

I know this... I was just too lazy to explain it.